Senior Security Engineer I

Job description
Your Growth You are someone who thrives in a high-performance environment, bringing a growth mindset and entrepreneurial spirit to tackle meaningful challenges that have a real impact.

In return for your drive, determination, and curiosity, we’ll provide the resources, mentorship, and opportunities to help you quickly broaden your expertise, grow into a well-rounded professional, and contribute to work that truly makes a difference.

When you join us, you will have:
• Continuous learning: Our learning and apprenticeship culture, backed by structured programs, is all about helping you grow while creating an environment where feedback is clear, actionable, and focused on your development. The real magic happens when you take the input from others to heart and embrace the fast-paced learning experience, owning your journey.
• A voice that matters: From day one, we value your ideas and contributions. You’ll make a tangible impact by offering innovative ideas and practical solutions. We not only encourage diverse perspectives, but they are critical in driving us toward the best possible outcomes.
• Global community: With colleagues across 65+ countries and over 100 different nationalities, our firm’s diversity fuels creativity and helps us come up with the best solutions. Plus, you’ll have the opportunity to learn from exceptional colleagues with diverse backgrounds and experiences.
• Exceptional benefits: In addition to a competitive salary (based on your location, experience, and skills), we offer a comprehensive benefits package, including medical, dental, mental health, and vision coverage for you, your spouse/partner, and children.

Your ImpactYou’ll join our office as part of the Cybersecurity pillar in the IAM domain. The IAM domain is responsible for developing and operating IAM services globally across the organization for both internal and external facing services. Your team members are located across the world in different time zones (Belgium, Czech Republic, Germany, India, USA, Costa Rica).

As the Senior Security Engineer, you will be responsible for ensuring security and compliance of our organization's critical resources. This includes implementing and administering identity and access management solutions, managing user accounts, and collaborating with stakeholders to define and implement IAM access policies and standards. You'll also provide technical support and training to end-users, as well as monitor and analyze IAM-related logs and reports.

In this role, you will develop capabilities which will serve as baseline for our firm users and improving IAM experience through executing our IAM Strategy. You will drive, contribute, and learn multiple technology skills (Identity orchestration, Access management Identity Governance) based on our IAM toolkit. Through innovative software as a solution to service, and a vibrant ecosystem of alliances, we are redefining what it means to work with McKinsey.

Your qualifications and skills
• 5+ years of Identity and Access Management (IAM) experience, including 3+ years with Okta Workflows, development, and onboarding.
• Expertise in Single Sign-On (SSO), federated authentication (SAML/OIDC), and SCIM integration for identity provisioning.
• Hands-on experience with Okta SSO, integrations, scripting, automation (e.g., inline/event hooks), and MFA configuration.
• Proficiency in API usage (Okta Native API or similar), troubleshooting, and automation with Terraform.
• Strong programming/scripting skills (Python, Java, Go, or Crepe Script) and experience with Git and CI/CD pipelines.
• Ability to create technical diagrams (e.g., sequence, context, swimlane) for authentication flows.
• Knowledge of access control policies, secure coding principles, and IAM security best practices.
• Proven experience with Okta Identity Engine, Identity Threat Protection, and device access solutions.
• Strong client communication and presentation skills for technical and non-technical audiences.